Home / 218,119.28-301,001.40-121,322.12

Finding the Fourth Proportional to 218,119.28, 301,001.40 and 121,322.12

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Solution

The fourth proportional to 218,119.28, 301,001.40 and 121,322.12 is: 167,422.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,119.28 : 301,001.40 = 121,322.12 : x
  2. Step 2: Convert to fraction form
    218,119.28/301,001.40 = 121,322.12/x
  3. Step 3: Cross multiply
    218,119.28x = 301,001.40 × 121,322.12
  4. Step 4: Simplify right side
    218,119.28x = 36,518,126,465.96
  5. Step 5: Solve for x
    x = 36,518,126,465.96/218,119.28
  6. Step 6: Final answer
    x = 167,422.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.